View on Amazon

Product description

Our Story

Fosi Audio was founded with a simple goal: Build products that sound great and make people want to listen to music every day. We design, manufacture, and sell many Hi-Fi audio products on the market. We pursue your perfect music journey. Enjoy Hi-Fi music with Fosi Audio audio products!

2.1 CH Bluetooth 5.0 Stereo Amp

Product Parameters:

Input mode: U-disk/Bluetooth/RCA

Output mode: Powered subwoofer+ Passive Speakers

SNR: ≥98dB

THD: ≤0.05%

Working voltage: 19-35V

U-disk: USB 2.0, compatible with USB 3.0

U-disk capacity: MAX 32GB, no more than 100MB per file

Support format: MP3/WMA/APE/ FLAC/WAV

Max output power: 160 Watt×2 + powered subwoofer

2 Channel Power Amp: BT10A, BT20A, BT20A Pro, TB10A, TB10D, V1.0B, V1.0G, TDA7498E, ZK-1002, ZK-502T. 2.1 Channel Power Amp: BT30D, BT30D Pro, BL20A, BL20C, ZK-TB21. DAC: Q4, K5 Pro, DS1, DS2. DAC Amplifier: PH04, DA2120A, DA2120C. Subwoofer Amp: TP-02, M01-BT, M02, M03, M04. Phono Preamp: BOX X1, BOX X2, BOX X3, BOX X4. Tube Preamp: P1. Tube Headphone Amplifier: T20, T20X, P2. Class AB Amplifier: T3.

Mutiple Input Modes

Easily adjust your input mode with the BL20C audio amplifier’s convenient input mode switch, which allows you to choose between U-disk, Bluetooth, and RCA inputs. With priority given to U-disk, followed by Bluetooth and RCA, BL20C ensures a seamless and tailored listening experience.

STMicroelectronics TDA7498E Chip

The BL20C audio amplifier provides powerful dual-channel stereo output with 160-W + 160-W power output at THD=10% with RL=4Ω and VCC=36V. It also features a 220-W mono parallel BTL output at THD=10% with RL=3Ω and VCC=36V, taking your audio experience to the next level.

Build 2.1 Channel Stereo System

Setting up a home stereo sound system with 2.1 amp BL20C is a breeze, as it can effortlessly connect with both passive speakers and a powered subwoofer. In just a few minutes, you can have a fully functional and immersive audio setup.

Add to Cart

Customer Reviews

4.3 out of 5 stars 702

4.5 out of 5 stars 899

4.5 out of 5 stars 9,201

4.4 out of 5 stars 2,828

4.4 out of 5 stars 1,404

4.5 out of 5 stars 2,209

Price

$79.99$79.99 $89.99$89.99 $79.99$79.99 $89.99$89.99 $109.99$109.99 $79.99$79.99

Type
Bluetooth 2.1 CH Amp with Remote Control Bluetooth 2.1 CH Amp Bluetooth 2.0 CH Amp Bluetooth 2.1 CH Amp Bluetooth 2.1 CH Amp Bluetooth 2.0 CH Amp

MAX Power Output
100W x 2 160W x 2 100W x 2 50W x 2+100W 165W×2+350W 300W x 2

Input
Bluetooth + 3.5mm AUX + U-disk Bluetooth + RCA + U-disk Bluetooth + RCA Bluetooth + RCA Bluetooth + RCA Bluetooth + RCA

Output
Passive Speakers + Active Speakers/Amplifier/Active Subwoofer Passive Speakers + Active Subwoofer Passive Speakers Passive Speakers+Active/Passive Subwoofer Passive/Active Speakers+ Passive/Active Subwoofer Passive Speakers+Active Speakers/Sub/Amp

Treble & Bass Control

✓

THD
≤ 0.001% ≤ 0.05% ≤ 0.04% ≤ 0.04% ≤ 0.3% ≤ 0.005%

SNR
≥ 92dB ≥ 98dB ≥ 98dB ≥ 98dB ≥ 85dB ≥108dB

Terminating Impedance
2-8 Ohm 2-8 Ohm 2-8 Ohm 2-8 Ohm 2-8 Ohm 2-8 Ohm

Power Adapter
24V/4.5A 24V/4.5A 24V/4.5A 24V/4.5A 32V/5A 32V/5A

Work Voltage
AC 110V – 240V AC 110V – 240V AC 110V – 240V AC 110V – 240V AC 110V – 240V AC 110V – 240V

Add to Cart

Customer Reviews

4.1 out of 5 stars 77

4.6 out of 5 stars 1,246

4.4 out of 5 stars 1,303

4.4 out of 5 stars 3,100

4.2 out of 5 stars 415

4.5 out of 5 stars 363

Price

— no data
$89.99$89.99
— no data
$69.99$69.99 $79.99$79.99 $59.99$59.99

Type
Bluetooth Tube 2.1 CH Amp 2.0 CH Amp Bluetooth Tube 2.0 CH Amp DAC+Headphone Amp DAC+Headphone Amp 48V5A Power Supply

MAX Power Output
50W x 2 300W x 2 50W x 2 Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers. 120mW@32 Ohm(SE); 220mW@32 Ohm(BAL) 240W

Input
Bluetooth + 3.5mm AUX1+3.5mm AUX2 RCA Bluetooth + RCA PC-USB + Optical + Coaxial Type C+ USB A – no data

Output
Passive Speakers + Active Subwoofer+ Headphone Passive Speakers+Pre-Out Passive Speakers + Headphone RCA + 3.5mm Headphone 3.5mm Headphone+ 4.4mm Headphone – no data

Treble & Bass Control

✓
x
✓

✓
x – no data

THD
≤ 0.1% <0.003% ≤ 0.04% ≤0.01% ≤ 0.0006%(SE) ≤ 0.001%(BAL) – no data

SNR
≥ 80dB ≥110dB ≥ 98dB ≥105dB ≥120dB – no data

Terminating Impedance
4-8 Ohm 2-8 Ohm 2-8 Ohm 16-200 Ohm 16-300 Ohm – no data

Power Adapter
– no data
32V/5A 24V/4.5A – no data
– no data
48V/5.0A

Work Voltage
AC 110V – 240V AC 110V – 240V AC 110V – 240V DC 5V – no data
AC 110V – 240V

Versatile Connectivity and Playback: The Fosi Audio BL20C is a Bluetooth 5.0 enabled 2.1 channel stereo amplifier and U-disk player, perfect for home theater speaker systems. Its compact Class D power amp design allows for convenient and portable use. The U-Disk input supports popular audio formats such as MP3, WMA, APE, FLAC, and WAV. Enjoy flexible connection options including U-disk, Bluetooth, and RCA input, all capable of driving passive speakers and powered subwoofers to enhance your audio system.
Powerful Audio Performance: The BL20C stereo receiver amplifier features the STMicroelectronics TDA7498E chip, delivering robust audio performance. This dual BTL class-D audio amplifier is designed for home speaker systems and operates with a single power supply. It includes smart protection, thermal overload protection, small offset (<20 mV), standby/mute features, and differential inputs for minimal common-mode noise, ensuring a superior audio experience.
Hi-Fi Sound Quality: Experience exceptional sound quality with the BL20C mini amplifier’s advanced circuit design, which guarantees hi-fi sound. Stream music from your favorite media services effortlessly and without compromising on sound quality. The BL20C is compatible with the latest devices such as iPhone/Android, iPod, iPad, PC, laptop, computer, TV, DVD, and more.
Enhanced Control Options: The BL20C stereo amp offers a new level of control with various knobs for bass, treble, volume, and input mode switch. Additionally, it includes controls for the previous song, next song, and play/pause functions. These features set the amplifier apart from traditional audio amplifiers, with a powerful MAX output of up to 320W, allowing for a customized listening experience.
Complete Package: BL20C stereo power amplifier x1, Bluetooth antenna x1, User Manual x1, Power Adapter x1, and AC Cord x1.